Emergency services and engineers prepare to enter the site of a crane fire and collapse in Ultimo, Sydney. Photo: Nick Moir

Emergency services and engineers prepare to enter the site of a crane fire and collapse in Ultimo, Sydney. Photo: Nick Moir

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Police will close roads around the Broadway area this weekend while a major operation to remove a collapsed crane takes place.

Additional cranes will be brought in to remove the damaged crane, which caught fire on Tuesday before its jib came crashing down on a University of Technology, Sydney building site.

The extra cranes will be situated on the northern side of Broadway, between Wattle Street and Jones Street, and will also be used to stabilise parts of the damaged UTS building.

Broadway will be reduced to two lanes in each direction with a speed limit of 40km/h from 4am Saturday until 4am Monday, while Wattle Street will remain closed between Broadway and Thomas Street. Citybound traffic will still be able to use the left-turn slip lane from Broadway into Wattle Street.

The roads will be reopened to traffic at 4am on Monday.

Abercrombie Street will also be closed at Cleveland Street while the salvage operation occurs, with motorists advised to use City Road to access Broadway, Anzac Bridge and the Sydney Harbour Bridge.

Police said drivers should avoid the area near the collapsed crane as delays are expected all weekend.

Buses travelling through the area may also be affected by the operation. The westbound bus stop opposite the work site on Broadway will be closed, with signs to direct passengers to the nearest bus stop.

Meanwhile, NSW Police are preparing a report for the coroner on the crane fire. Any fire in NSW that causes more than $100,000 damage is reviewed by the Coroner's Court.